Which components make up the power ventilation system?

• A. Ductwork for fresh air and an exhaust blower.
• B. Filter and pump.
• C. Battery and switch.
• D. Gauge and tube.

Answer: (A)

Power ventilation moves air through a vessel using a dedicated path and a blower. The essential parts are the ductwork that carries fresh air into the space and the exhaust blower that pushes stale air out. Together, they create a steady flow of air to ventilate compartments even when outside conditions vary. Other options mix in items (like a filter with a pump, or a battery and switch, or a gauge and tube) that aren’t the basic components needed to move air for ventilation, so they don’t define the system.